management

Hello. I'm seeking for a solution for a site with hundreds of Hierarchical Terms:
Mass terms in level 1 and some terms in level 2 and some terms in level 3.
And it's free tagging system, user can add term in any level.
All 3 levels are required when posting node(image).

Since there are so many terms in level 1, it's not an ease for users to select what they need with default modules, needless to say the bulk uploading. In addition to that, if users want to add new terms, how to guide them add terms level by level?

In this project we can create a module so that it will have the following features:

1. Project Management (creation of project, project team(drupal users), client Name and time period of projects)
2. User type( client, HR, Team Members, project lead)
3. On the basis of every project the evaluation will be done.
4. Every team member will got some points or ratings.
5. Ratings will be from three sides one is from client, second from team mebers and third from management team like project lead.
6. Feedback from the client(some evaluation forms)